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<TITLE>[Chapter 25] 25.58 java.lang.StringBuffer (JDK 1.0)</TITLE>
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<h2 CLASS=sect1><A CLASS="TITLE" NAME="JNUT2-CH-25-SECT-58">25.58 java.lang.StringBuffer (JDK 1.0)</A></h2>

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<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-25-SECT-58.1"></A></h3>
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<P CLASS=para>
This class represents a string of characters. It
differs from the <tt CLASS=literal>String</tt> class in that its
contents may be modified. A
<tt CLASS=literal>StringBuffer</tt> object grows in length as necessary. 
The string stored in a <tt CLASS=literal>StringBuffer</tt> object may be
modified in place with the <tt CLASS=literal>setCharAt()</tt>,
<tt CLASS=literal>append()</tt>, and <tt CLASS=literal>insert()</tt> methods.

<P CLASS=para>
After a string is processed in a <tt CLASS=literal>StringBuffer</tt>
object, it may be efficiently converted to a
<tt CLASS=literal>String</tt> object for subsequent use. The
<tt CLASS=literal>StringBuffer.toString()</tt> method does not copy
the internal array of characters; instead it shares that array
with the new <tt CLASS=literal>String</tt> object, and makes a new
copy for itself only when further modifications are made to
the <tt CLASS=literal>StringBuffer</tt> object.

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<PRE>
public final class <tt CLASS=literal>StringBuffer</tt> extends Object implements Serializable {
    // <tt CLASS=literal>Public Constructors</tt>
            public <tt CLASS=literal>StringBuffer</tt>();
            public <tt CLASS=literal>StringBuffer</tt>(int <tt CLASS=literal>length</tt>);
            public <tt CLASS=literal>StringBuffer</tt>(String <tt CLASS=literal>str</tt>);
    // <tt CLASS=literal>Public Instance Methods</tt>
            public synchronized StringBuffer <tt CLASS=literal>append</tt>(Object <tt CLASS=literal>obj</tt>);
            public synchronized StringBuffer <tt CLASS=literal>append</tt>(String <tt CLASS=literal>str</tt>);
            public synchronized StringBuffer <tt CLASS=literal>append</tt>(char[] <tt CLASS=literal>str</tt>);
            public synchronized StringBuffer <tt CLASS=literal>append</tt>(char[] <tt CLASS=literal>str</tt>, int <tt CLASS=literal>offset</tt>, int <tt CLASS=literal>len</tt>);
            public StringBuffer <tt CLASS=literal>append</tt>(boolean <tt CLASS=literal>b</tt>);
            public synchronized StringBuffer <tt CLASS=literal>append</tt>(char <tt CLASS=literal>c</tt>);
            public StringBuffer <tt CLASS=literal>append</tt>(int <tt CLASS=literal>i</tt>);
            public StringBuffer <tt CLASS=literal>append</tt>(long <tt CLASS=literal>l</tt>);
            public StringBuffer <tt CLASS=literal>append</tt>(float <tt CLASS=literal>f</tt>);
            public StringBuffer <tt CLASS=literal>append</tt>(double <tt CLASS=literal>d</tt>);
            public int <tt CLASS=literal>capacity</tt>();
            public synchronized char <tt CLASS=literal>charAt</tt>(int <tt CLASS=literal>index</tt>);
            public synchronized void <tt CLASS=literal>ensureCapacity</tt>(int <tt CLASS=literal>minimumCapacity</tt>);
            public synchronized void <tt CLASS=literal>getChars</tt>(int <tt CLASS=literal>srcBegin</tt>, int <tt CLASS=literal>srcEnd</tt>, char[] <tt CLASS=literal>dst</tt>, int <tt CLASS=literal>dstBegin</tt>);
            public synchronized StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, Object <tt CLASS=literal>obj</tt>);
            public synchronized StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, String <tt CLASS=literal>str</tt>);
            public synchronized StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, char[] <tt CLASS=literal>str</tt>);
            public StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, boolean <tt CLASS=literal>b</tt>);
            public synchronized StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, char <tt CLASS=literal>c</tt>);
            public StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, int <tt CLASS=literal>i</tt>);
            public StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, long <tt CLASS=literal>l</tt>);
            public StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, float <tt CLASS=literal>f</tt>);
            public StringBuffer <tt CLASS=literal>insert</tt>(int <tt CLASS=literal>offset</tt>, double <tt CLASS=literal>d</tt>);
            public int <tt CLASS=literal>length</tt>();
            public synchronized StringBuffer <tt CLASS=literal>reverse</tt>();
            public synchronized void <tt CLASS=literal>setCharAt</tt>(int <tt CLASS=literal>index</tt>, char <tt CLASS=literal>ch</tt>);
            public synchronized void <tt CLASS=literal>setLength</tt>(int <tt CLASS=literal>newLength</tt>);
            public String <tt CLASS=literal>toString</tt>();  //<tt CLASS=literal> Overrides Object</tt>
}
</PRE>
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<DIV CLASS=sect2>
<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-25-SECT-58.2">Passed To:</A></h3>

<P CLASS=para>
ChoiceFormat.format(), 
DateFormat.format(), 
DecimalFormat.format(), 
Format.format(), 
MessageFormat.format(), 
NumberFormat.format(), 
SimpleDateFormat.format(), 
String()

</DIV>

<DIV CLASS=sect2>
<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-25-SECT-58.3">Returned By:</A></h3>

<P CLASS=para>
ChoiceFormat.format(), 
DateFormat.format(), 
DecimalFormat.format(), 
Format.format(), 
MessageFormat.format(), 
NumberFormat.format(), 
SimpleDateFormat.format(), 
StringBuffer.append(), 
StringBuffer.insert(), 
StringBuffer.reverse(), 
StringWriter.getBuffer()

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